ライブラリ登録: Guest
International Journal of Energetic Materials and Chemical Propulsion

年間 6 号発行

ISSN 印刷: 2150-766X

ISSN オンライン: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

APPROPRIATENESS OF BURNING RATE MEASURING TECHNIQUE WITH THE MEASURING CONDITIONS AND REQUESTED DATA

巻 17, 発行 4, 2018, pp. 287-302
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2019029021
Get accessGet access

要約

Burning rate data are usually obtained in several ways. Small-scale ballistic evaluation motors, constant volume vessels, standard strand burners, and full-scale motors with good instrumentation are the most common methods used to measure the ballistic properties of solid propellants. The objective of this work is to describe the facilities developed by each measuring technique and validate the newly developed SV-2 for strand burning measurements at low and high pressures. Modifications were made to use the SV-2 closed bomb as a Crawford bomb. The sample holder and the closing tip were totally changed to enable burn rate measurements at the beginning of strand burn measuring. The burning rate of different commercial extruded double bases was measured using the modified SV-2 strand burning and compared with the burning rate resulting from subscale rocket motors. The results showed that the burning rates generated from both methods are comparable and close to each other. One firing from the subscale motor or strand burning is equal to one point on the P–u curve. The effect of the initial grain temperature on the combustion process was investigated using the SV-2 closed vessel method compared to the subscale rocket motor method. Changes in the ignition process were reported through the variations in the durations for different ignition zones. The burning criteria were studied through the P–t curves and the actual burning time. The burning parameters (pressure exponent n and temperature coefficient a) were calculated. The results showed that raising the initial grain temperature increases the ignitability, burning rate, and operating pressure. The suitability of the burning rate measuring technique is discussed. The subscale rocket motor method can be considered the method that most closely simulates reality despite the fact that it requires more money and effort and is time consuming. Strand burning measurements are favorable when measuring the burning rates at lower operating pressures (2–10 MPa), while the method is not suitable for investigating the initial grain temperature effect on the combustion process. The SV-2 closed vessel can be considered a more convenient method for measuring the burning rate from an economical point of view.

Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集 価格及び購読のポリシー Begell House 連絡先 Language English 中文 Русский Português German French Spain